From the first time I heard Shawn Colvin's "Shotgun Down The Avalanche," I was impressed by Colvin's committed vocals.and lyrical metaphor for a rickety relationship that sounds as though it should end.
After rediscovering Maura O'Connell's version recently, I was struck by how well O'Connell captures the song's essence. It's interesting hearing "...Avalanche" sung in a lower register with some degree of Mary Fahl-like gravity.
That's a successfully sung cover--one in which the vocalist gives the song some of her own personality while remaining true to its melody and mood.